Agilent Technologies B1500A Uživatelská příručka stáhnout pdf (Strana 207)

Agilent B1500 VXIplug&play Driver User’s Guide, Edition 3 4-51

Programming Examples for C++ Users

CV Sweep Measurement

phase_compen (vi, ret); /* 43 */

ret = agb1500_setCmuFreq(vi, agb1500_CH_CMU, freq);

ret = agb1500_forceCmuAcLevel(vi, agb1500_CH_CMU, osc_level);

open_corr (vi, ret, freq, ref_cp, ref_g);

ViInt32 rbx; /* 49 */

rbx = MessageBox(NULL , "Connect DUT. Then click OK.", "CV sweep measurement",

MB_OK);

ret = agb1500_setCv(vi, agb1500_CH_CMU, agb1500_SWP_VF_SGLLIN, vg1, vg2, nop1,

hold, delay, s_delay);

check_err (vi, ret);

ret = agb1500_resetTimestamp(vi); /* 54 */

ret = agb1500_sweepCv(vi, agb1500_CH_CMU, agb1500_CMUM_CP_G, range, &rep, &sc[0],

&md[0], &st[0], &mon[0], &st_mon[0], &mt[0]);

check_err (vi, ret);

ret = agb1500_zeroOutput(vi, agb1500_CH_ALL); /* 58 */

check_err (vi, ret);

Line Description

43 Calls the phase_compen subprogram (shown in Table 4-15) used to perform the phase

compensation of the MFCMU.

45 Sets the frequency of the MFCMU output signal.

46 Sets the oscillator level of the MFCMU output signal.

47 Calls the open_corr subprogram (shown in Table 4-16) used to perform the open

correction of the MFCMU.

49 to 51 Displays a message box that asks you to connect the device to the measurement

terminals. Then connect the CMUH and CMUL to the gate and substrate respectively.

Pressing OK sets the DC bias sweep source of the MFCMU.

52, 56, and

Calls the check_err subprogram (shown in Table 4-1) to check if an error status is

returned for the previous line.

54 Resets the time stamp.

55 Performs capacitance-voltage (CV) sweep measurement.

58 Applies 0 V from all channels.

1 2 ... 202 203 204 205 206 207 208

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Agilent Technologies B1500A Uživatelská příručka Strana 207